OK, tomorrow I might go to Games Workshop for the first time so I can get started on the game. I'm both interested in collecting Space Marines and Tau Empire, but mostly interested with Tau Empire as my main army. Since I'd like to start with a set like Battle of Black Reach so I can start with two armies to play with, I was wondering if the store would swap armies from the box with the army you would like instead of Orks. (Depending on the equivalent of how many points it's worth per army, or how much the armies are worth in cost)
Thanks!